EP3634197B1 - Rinsing container, method for producing a rinsing container and household dishwashing machine - Google Patents

Description

The present invention relates to various embodiments of a washing container for a household dishwasher, a household dishwasher with such a washing container and a method for producing such a washing container.

A household dishwasher usually has a washing container which is formed from several sheet metal sections connected to one another. As a rule, the washing container has a rear wall which is connected to a flange of a washing container jacket and a base plate. A rear wall sealant is usually provided between the rear wall and the flange. One challenge is to reliably seal construction-related unevenness, such as notches, on the flange. For example, rabbet connections can have rabbet notches. The sealing of such folded joints against an opposing sealing surface is a particular difficulty.

The pamphlet DE 10 2015 216 228 A1 discloses a household dishwasher with a washing container which comprises several wall parts and which is provided on the front with a loading opening for loading items to be washed, which can be closed at least temporarily by a container door, the right side wall, the ceiling and the left side wall forming a hood made of metal, which in the stretched state formed a preferably flat press part and was then bent into a U-shape, a trough-shaped base made of metal being a deep-drawn part made from preferably austenitic steel and the rear wall attached to the hood made of metal and the trough-shaped base made of metal is made of metal as a preferably flat press part. The two outer interfaces, the hood made of metal and the trough-shaped base made of metal can have a 90 ° bend to the outside in their rear areas. Furthermore, the rear wall made of metal attached to the rear of the hood made of metal and to the trough-shaped base made of metal can be largely liquid-tight in the area of the edge areas contacting one another by means of at least one sealing means attached, in particular glued on and / or preferably welded on at points. The sealant can comprise a silicone material or a pressure sensitive adhesive.

Against this background, it is an object of the present invention to provide an improved washing container for a domestic dishwasher.

Accordingly, a washing container for a household dishwasher is proposed, with a base plate, a rear wall, a U-shaped washing container jacket arranged on the base sheet and firmly connected to it by means of a folded joint, a fastening flange formed on the base sheet and the U-shaped washing container jacket for fastening the Rear wall on the base plate and on the U-shaped washing container jacket and a rear wall sealing means which is provided between the rear wall and the fastening flange. A fold sealant is provided in the fold joint and an auxiliary sealant is provided between the fold sealant and the back wall sealant.

A solution is thus provided in order, for example, to ensure a reliable seal in the rebate notch of the fastening flange and / or in the area of the triple point. The advantage is that, for example, conventional rebate sealants, in particular with an essentially constant amount, thickness and / or strength, and a conventional rear wall sealant, in particular with an essentially constant amount, thickness and / or strength, can be used, and in particular only by using the additional sealant to indicate the tightness the notch of the fastening flange and / or in the area of the triple point is improved. In particular, the additional sealant wets both the fold notch of the fastening flange - preferably also the fold sealant - and the rear wall sealant to form a seal.

For example, the cross-sectional area of the sealant bead of the rebate sealant in the part of the fastening flange formed by the rebate connection can be made larger than the cross-sectional area in the central area of the rebate connection in order to further improve the tightness.

"Cross-sectional area" of the sealant bead means in the present case viewed in a section which runs perpendicular to a depth direction and / or a width direction of the washing container or the domestic dishwasher. For example, the sealant bead is essentially an elongated body, the cross-sectional area of which runs correspondingly perpendicular to a longitudinal extension of the sealant bead.

The “central area” of the folded seam connection is in particular an area which is provided along the depth direction, in particular exactly, between a closed door of the household dishwasher or a loading opening of the washing container and the rear wall of the washing container.

A rebate notch in the middle area of the rebate connection is preferably facing a washing area, which is enclosed by the floor panel and the U-shaped washing container jacket, and is located in a field of vision of the user.

According to one embodiment, the fastening flange comprises part of the folded seam connection, the additional sealing means being provided only on or on this part of the seamed connection.

Thus, the additional sealant is only partially provided on the rebate notch of the fastening flange and / or the triple point and thus the tightness is improved in a resource-saving manner.

An area where the rabbet connection of the fastening flange faces the rear wall and is in contact with this or the rear wall sealant can also be referred to as a "triple point" because the U-shaped washing container jacket, the bottom plate and the rear wall adjoin one another in this area.

According to a further embodiment, the additional sealant is designed as a hot melt adhesive and / or a pressure-sensitive adhesive.

The pressure-sensitive adhesive has the advantage that, in particular, the additional sealant is liquefied or softened when the rear wall is pressed against the fastening flange, so that the additional sealant enters the rebate notch of the Mounting flange is pressed. The hotmelt adhesive can be designed or referred to as a hotmelt. Alternatively or additionally, the additional sealant can be designed as silicone or comprise silicone. For example, the additional sealant has the same or a different chemical composition as the rebate sealant and / or the rear wall sealant.

According to a further embodiment, the rear wall is provided with a receiving bead for a rear wall sealing means, the rear wall sealing means is provided between the rear wall and the fastening flange as a sealant bead, and the receiving bead has an enlargement in which a cross-sectional enlargement of the sealant bead is provided.

A solution is thus provided in order, for example, to ensure a reliable seal in the rebate notch of the fastening flange and / or in the area of the triple point. For example, the proposed solution can also be used with the additional sealant.

According to a further embodiment, the widening of the receiving bead is arranged so as to overlap with the folded seam connection.

According to a further embodiment, the fastening flange comprises part of the folded seam connection and the seam sealing means is provided in the seamed connection and is designed as a sealant bead. A cross-sectional area of the sealant bead in the part of the fastening flange formed by the folded connection is larger than a cross-sectional area in a region of the folded connection which is provided along the depth direction of the washing container between a loading opening of the washing container and the rear wall of the washing container.

Seam connections have the advantage that different metals can be firmly and permanently connected to one another. For example, the U-shaped washing container jacket is made from a steel sheet, which is inexpensive, and the bottom sheet is made from a stainless steel sheet, which has a high level of corrosion resistance and a high-quality appearance. The part of the fastening flange formed by the rabbet connection has in particular a rabbet notch.

Since the cross-sectional area of the sealant bead is partially increased on the fastening flange, the rebate notch on the fastening flange can be completely filled with the rebate sealant and optionally wet the rear wall and / or a rear wall sealant. A reliable seal of the part of the fastening flange formed by the folded seam connection can thus be provided.

It goes without saying that the sealant bead has a first state before the rabbet connection is formed - after being applied to the base plate and / or the U-shaped washing container jacket - and a second deformed and / or squeezed state after the rabbet connection has been formed. The larger cross-sectional area can already be provided in the first state (for example by providing a thickening) so that when the sealant bead is brought into the second state (fold) the fold sealant is partially pressed out of the fold connection on the fastening flange. Such a partial exit of the rebate sealant on the fastening flange is not or hardly visible to a user of the domestic dishwasher, since the fastening flange is covered by the rear wall. For example, leakage of the fold sealant at the fold connection in the field of vision of the user is undesirable.

An area where the rabbet connection of the fastening flange faces the rear wall and is in contact with this or the rear wall sealant can also be referred to as a "triple point" because the U-shaped washing container jacket, the bottom plate and the rear wall adjoin one another in this area.

According to one embodiment, the rinsing container comprises a rear wall sealant, which is provided circumferentially along the fastening flange between the rear wall and the fastening flange, the fold sealant and the rear wall sealant being in contact with one another in the part of the fastening flange formed by the folded joint.

For example, the rear wall sealant is designed as silicone or the rear wall sealant has silicone. Preferably the back wall sealant is designed to correspond to the fastening flange and in particular to be circumferential and closed.

According to a further embodiment, the larger cross-sectional area of the sealant bead has at least twice, three times, four times or five times the area than the cross-sectional area in the area of the folded joint, which is provided along the depth direction of the washing container between a loading opening of the washing container and the rear wall of the washing container.

In this way, sufficient wetting of the rear wall and / or the rear wall sealing means can be ensured, in particular to seal the rebate notch on the fastening flange. The bead of sealant preferably has a diameter between 0.8 and 1.2 mm, in particular 1 mm, in the central region and a diameter between 1.8 and 2.2 mm, in particular 2 mm, in a region after forming forms the mounting flange.

According to a further embodiment, the fold sealant is designed as a hot melt adhesive and / or silicone.

For example, the rebate sealant and the rear wall sealant are formed from the same material or the rebate sealant and the rear wall sealant have the same chemical composition. Alternatively, the fold sealant and the back wall sealant have different chemical compositions. The fold sealant is preferably a pressure-sensitive hot melt adhesive.

According to a further embodiment, the washing container comprises a frame which is provided at a loading opening of the washing container and is arranged at least in sections inside the U-shaped washing container jacket and at least in sections outside the U-shaped washing container jacket. The folded joint comprises an overlap area with the frame and a cross-sectional area of the sealant bead is larger in the overlap area than the cross-sectional area in the area of the folded joint which is provided along the depth direction of the washing container between a loading opening of the washing container and the rear wall of the washing container.

What has been said for the cross-sectional area of the sealant bead in the part of the fastening flange formed by the folded joint applies accordingly to the cross-sectional area of the sealant bead in the overlapping area. For example, the overlapping area does not form a field of vision for the user, so that an exit of the rebate sealant from the rebate is accordingly not visible. Even in the first state of the sealant bead, two thickenings, namely for the fastening flange and for the overlap area, can be provided. The middle area is preferably between the thickened areas. It goes without saying that two corresponding beads of sealant can be formed on two folded joints of the washing compartment.

According to a further embodiment, the folded connection has a greater width in the overlapping area of the folded connection than in the area of the folded connection which is provided along the depth direction of the washing container between a loading opening of the washing container and the rear wall of the washing container.

This comes about, for example, because the folded joint has a lower compression in the overlapping area, since a folding process takes place in the overlapping area under difficult conditions. For example, a bending force (or folding force) with which the metal sheets are bent (folded) to form the folded seam connection is reduced in the overlapping area, since only a reduced counterforce can be applied due to the frame. In order to nevertheless ensure a sufficient tightness of the folded seam connection, an increased amount of the seam sealant is provided in the overlapping area.

In addition, a household dishwasher with a washing container, as described above, is proposed.

A door, which can be pivoted about a pivot axis in order to open and close the washing container, can be attached to the washing container. A multiplicity of, for example three, washware receptacles for washware arranged one above the other can be provided in the wash container.

• Bereitstellen eines Bodenblechs, einer Rückwand und eines U-förmigen Spülbehältermantels,
• Anordnen des U-förmigen Spülbehältermantels auf dem Bodenblech,
• Ausbilden der Falzverbindung und Verbinden des U-förmigen Spülbehältermantels mit dem Bodenblech mit Hilfe der Falzverbindung,
• Anformen eines Befestigungsflanschs an dem Bodenblech und dem U-förmigen Spülbehältermantel zum Befestigen der Rückwand an dem Bodenblech und an dem U-förmigen Spülbehältermantel,
• Anordnen der Rückwand an dem Befestigungsflansch,
• Vorsehen eines Falzdichtmittels in der Falzverbindung,
• Vorsehen eines Rückwanddichtmittels zwischen der Rückwand und dem Befestigungsflansch, und
• Vorsehen eines Zusatzdichtmittels zwischen dem Falzdichtmittel und dem Rückwanddichtm ittel.

Furthermore, a method for producing a washing container for a household dishwasher is proposed, with the following steps:

• Providing a base plate, a rear wall and a U-shaped washing container jacket,
• Arranging the U-shaped washing container jacket on the floor panel,
• Forming the folded joint and connecting the U-shaped washing container jacket to the floor panel with the aid of the folded joint,
• Forming a fastening flange on the base plate and the U-shaped washing container jacket for fastening the rear wall to the base sheet and on the U-shaped washing container jacket,
• Arranging the rear wall on the mounting flange,
• Providing a rebate sealant in the rebate joint,
• Providing a back wall sealant between the back wall and the mounting flange, and
• Providing an additional sealant between the rebate sealant and the rear wall sealant.

For example, the rebate sealant is provided in the rebate connection with the formation of the rebate connection, the rebate sealant being applied to the floor panel prior to formation.

According to one embodiment, after the rear wall has been arranged on the fastening flange, a pressure force is applied with the aid of a stamp to a bent corner section of the folded joint to reduce a corner radius of the folded joint in the corner section and to press the additional sealant into the folded joint.

In a section perpendicular to a height direction, the folded seam connection preferably has four times the sheet metal thickness. In contrast, there is a simple sheet metal thickness above and below the seam connection. When the fastening flange is molded on, the remaining corner radius or radius of curvature at the corner section in the folded joint is greater than above and below the folded joint. It is therefore advantageous to use the stamp to use the Bend the corner radius partially at the rebate connection in order to compensate for unevenness on the mounting flange. Furthermore, the additional sealant and / or the rear wall sealant and / or the rebate sealant are thereby pressed into the rebate notch of the fastening flange.

• vor dem Anordnen des U-förmigen Spülbehältermantels auf dem Bodenblech Vorsehen eines Falzdichtmittels an dem Bodenblech und/oder dem U-förmigen Spülbehältermantel zum Dichten einer Falzverbindung und Ausbilden einer Dichtmittelraupe, und
• vor dem Anformen der Rückwand an dem Befestigungsflansch Anformen eines Befestigungsflanschs an dem Bodenblech und dem U-förmigen Spülbehältermantel zum Befestigen der Rückwand an dem Bodenblech und an dem U-förmigen Spülbehältermantel, wobei eine Querschnittsfläche der Dichtmittelraupe in einem von der Falzverbindung gebildeten Teil des Befestigungsflansches größer ist als eine Querschnittsfläche in einem Bereich der Falzverbindung, welcher entlang der Tiefenrichtung des Spülbehälters zwischen einer Beschickungsöffnung des Spülbehälters und der Rückwand des Spülbehälters vorgesehen ist.

According to a further embodiment, a method with the following additional steps is proposed:

• before arranging the U-shaped washing container jacket on the floor panel, providing a fold sealant on the floor panel and / or the U-shaped washing container jacket for sealing a fold connection and forming a sealant bead, and
• Before the rear wall is formed on the fastening flange, a fastening flange is formed on the base plate and the U-shaped washing container jacket for fastening the rear wall to the base plate and on the U-shaped washing container jacket, with a cross-sectional area of the sealant bead in a part of the fastening flange formed by the folded joint being greater is as a cross-sectional area in a region of the folded joint, which is provided along the depth direction of the washing container between a loading opening of the washing container and the rear wall of the washing container.

The embodiments and features described for the proposed washing containers apply correspondingly to each of the proposed washing containers and correspondingly to the proposed methods. It goes without saying that the fastening flange can have two rebate notches (or even more) and that the proposed measures can be applied to all rebate notches.

Further possible implementations of the invention also include combinations, not explicitly mentioned, of features or embodiments described above or below with regard to the exemplary embodiments. The person skilled in the art will also add individual aspects as improvements or additions to the respective basic form of the invention.

Further advantageous configurations and aspects of the invention are the subject matter of the subclaims and of the exemplary embodiments of FIG

Invention. The invention is explained in more detail below on the basis of preferred embodiments with reference to the attached figures.

Fig. 1

eine schematische perspektivische Ansicht einer Ausführungsform einer Haushaltsgeschirrspülmaschine;

Fig. 2

eine schematische perspektivische Explosionsansicht einer Ausführungsform eines Spülbehälters für die Haushaltsgeschirrspülmaschine gemäß Fig. 1;

Fig. 3

eine schematische perspektivische Ansicht des Spülbehälters für die Haushaltsgeschirrspülmaschine gemäß Fig. 2;

Fig. 4

eine schematische perspektivische Ansicht eines Abschnitts des Spülbehälters für die Haushaltsgeschirrspülmaschine gemäß Fig. 3;

Fig. 5

eine Ausführungsform einer Dichtmittelraupe des Abschnitts gemäß Fig. 4;

Fig. 6

ein schematisches Blockdiagramm einer Ausführungsform eines Verfahrens zum Herstellen des Spülbehälters für die Haushaltsgeschirrspülmaschine gemäß Fig. 3;

Fig. 7

einen Schnitt VII - VII aus Fig. 1;

Fig. 8

einen Schnitt VIII - VIII aus Fig. 7;

Fig. 9

den Schnitt VIII - VIII in einer Explosionsansicht;

Fig. 10

ein schematisches Blockdiagramm einer Ausführungsform eines Verfahrens zum Herstellen eines Spülbehälters für die Haushaltsgeschirrspülmaschine gemäß Fig. 3;

Fig. 11

einen Horizontalschnitt durch eine Falzverbindung des Spülbehälters für die Haushaltsgeschirrspülmaschine gemäß Fig. 3; und

Fig. 12

eine Rückwand des Spülbehälters für die Haushaltsgeschirrspülmaschine gemäß Fig. 3.

Show it

Fig. 1

a schematic perspective view of an embodiment of a household dishwasher;

Fig. 2

a schematic perspective exploded view of an embodiment of a washing container for the domestic dishwasher according to FIG Fig. 1 ;

Fig. 3

a schematic perspective view of the washing container for the household dishwasher according to FIG Fig. 2 ;

Fig. 4

a schematic perspective view of a portion of the washing container for the domestic dishwasher according to FIG Fig. 3 ;

Fig. 5

an embodiment of a sealant bead of the section according to Fig. 4 ;

Fig. 6

a schematic block diagram of an embodiment of a method for producing the washing container for the domestic dishwasher according to FIG Fig. 3 ;

Fig. 7

a section VII - VII Fig. 1 ;

Fig. 8

a section VIII - VIII Fig. 7 ;

Fig. 9

the section VIII - VIII in an exploded view;

Fig. 10

a schematic block diagram of an embodiment of a method for producing a washing container for the domestic dishwasher according to FIG Fig. 3 ;

Fig. 11

a horizontal section through a rabbet connection of the washing container for the domestic dishwasher according to Fig. 3 ; and

Fig. 12

a rear wall of the washing container for the household dishwasher according to Fig. 3 .

In the figures, elements that are the same or have the same function have been given the same reference symbols, unless otherwise stated.

The Fig. 1 shows a schematic perspective view of a household dishwasher 1. The household dishwasher 1 comprises a washing container 2, which can be closed, in particular watertight, by a door 3. For this purpose, a sealing device can be installed between the door 3 and the washing container 2 be provided. The washing container 2 is preferably cuboid. The washing container 2 can be arranged in a housing of the domestic dishwasher 1. The washing compartment 2 and the door 3 can form a washing area 4 for washing items to be washed.

Door 3 is in the Fig. 1 shown in their open position. The door 3 can be closed or opened by pivoting about a pivot axis 5 provided at a lower end of the door 3. With the aid of the door 3, a loading opening 6 of the washing compartment 2 can be closed or opened. The washing compartment 2 has a base plate 7, a ceiling 8 arranged opposite the base plate 7, a rear wall 9 arranged opposite the closed door 3 and two side walls 10, 11 arranged opposite one another. The floor panel 7, the ceiling 8, the rear wall 9 and the side walls 10, 11 can be made of sheet steel, for example. In particular, the floor panel 7 can be made of a different material than the ceiling 8 and the side walls 10, 11. For example, the floor panel 7 can be made of the material 1.4301, the ceiling 8 and the side walls 10, 11 can be made of the material 1.4016 and the rear wall 9 also be made of the material 1.4016.

A first side wall 10, a second side wall 11 and the cover 8 arranged between the first side wall 10 and the second side wall 11 are constructed in one piece, in particular as a single piece of material, and form a U-shaped washing container jacket 12 of the washing container 2. The U-shaped washing container jacket 12, the rear wall 9 and the bottom plate 7 are components manufactured separately from one another, but which are connected to one another in a watertight manner. For example, the U-shaped washing container jacket 12 is connected to the base plate 7 with the aid of two folded joints, and the rear wall 9 is welded, in particular spot-welded, to the U-shaped washing container jacket 12 and to the base plate 7.

The domestic dishwasher 1 also has at least one washware receptacle 13 to 15. Preferably, several, for example three, washware receptacles 13 to 15 can be provided, the washware receptacle 13 being a lower washware receptacle or a lower basket, the washware receptacle 14 an upper washware receptacle or an upper basket and the washware receptacle 15 a cutlery drawer. Like the them Fig. 1 also shows, the washware receptacles 13 to 15 are one above the other in the wash container 2 arranged. Each washware receptacle 13 to 15 can optionally be moved into or out of the wash container 2. In particular, each washware receptacle 13 to 15 can be pushed into the washing container 2 in an insertion direction E (arrow) and pulled out of the washing container 2 in a pull-out direction A (arrow) counter to the insertion direction E (arrow).

The Fig. 2 shows a schematic perspective exploded view of an embodiment of the washing container 2 for the domestic dishwasher 1 according to FIG Fig. 1 . The Fig. 3 FIG. 11 shows a schematic perspective view of the washing compartment 2 for the domestic dishwasher according to FIG Fig. 2 . In the following, the Figs. 2 and 3 referenced at the same time.

The washing container 2 for the domestic dishwasher comprises, in addition to the U-shaped washing container jacket 12, the base plate 7 and the rear wall 9, a U-shaped frame 16 which supports the U-shaped washing container jacket 12. For this purpose, the frame 16 is firmly connected to the U-shaped washing container jacket 12. In particular, the frame 16 is connected to the U-shaped washing container jacket 12 with the aid of thermal rivets. The frame 16 is preferably a plastic component. In particular, the frame 16 is a plastic injection-molded component. As a result, the frame 16 can be manufactured inexpensively in large numbers.

The frame 16 is designed in such a way that it is provided at the loading opening 6 and is arranged at least in sections inside the U-shaped washing container jacket 12 and at least in sections outside the U-shaped washing container jacket 12. The washing container 2 for the domestic dishwasher also includes one in the Fig. 2 and in the Fig. 3 Base support, not shown, which is arranged below the floor panel 7. In particular, the washing container 2 for the domestic dishwasher is supported on the base support. The base carrier is a plastic component, in particular a plastic injection-molded component.

As the Fig. 3 shows, the frame 16 is pushed onto the loading opening 6 on the front side and thus stiffens the U-shaped washing container jacket 12 in the area of the loading opening 6. The frame 16 comprises a first leg 17, a second leg 18 and an intermediate leg 19 which connects the first leg 17 to the second leg 18. The first leg 17 is fixedly connected to the first side wall 10, the second leg 18 is fixedly connected to the second side wall 11 and the intermediate leg 19 is fixedly connected to the ceiling 8.

The first side wall 10 can be connected to the floor panel 7 with the aid of a first flanged connection or first folded seam connection 20 and the second side wall 11 can likewise be connected to the floor panel 7 with the aid of a second flanged connection or second folded seam connection 21. In the present case, folding or flanging is to be understood as a connection technology in sheet metal processing. This connection technology belongs to the group of joining by forming. Here, an edge of a sheet metal is bent over, for example with the aid of a flanging machine or folding machine. In this way, the bent edge is stiffened and a connection can be created from several sheet metal components. The folded connections 20, 21 each extend over an entire depth of the washing container 2 for the domestic dishwasher, that is, from the loading opening 6 to the rear wall 9. A width view x of the washing container 2 for the domestic dishwasher shows from the first side wall 10 to the second Side wall 11, a depth direction y (arrow) points from the loading opening 6 to the rear wall 9 and a height direction z (arrow) points from the floor panel 7 to the ceiling 8, where width direction x (arrow), depth direction y (arrow) and height direction z (Arrow) are each arranged essentially perpendicular to one another.

The Fig. 4 shows a schematic perspective view of a section of the first side wall 10, a section of the floor panel 7, which are connected to one another by means of the first folded seam connection 20, and a section of the frame 16. in the Fig. 4 only first side wall 10 of the washing container 2 for the domestic dishwasher is shown) a fastening flange 22 for fastening the rear wall 9 to the base plate 7 and to the U-shaped washing container jacket 12 is integrally formed. The fastening flange 22 is bent away from the washing chamber 4 and forms a connecting surface 43 to the rear wall 9, which faces the rear wall 9. Furthermore, the fastening flange 22 comprises a part 23 of the folded seam connection 20. It goes without saying that the second side wall 11 is connected analogously to the floor panel 7 and has a section of the mounting flange 22 (in the Fig. 4 Not shown). Furthermore, the ceiling 8 can comprise a further section of the fastening flange 22 (in the Fig. 4 Not shown).

The Fig. 5 FIG. 3 shows a fold sealant 24 which is used in the fold connection 20 according to FIG Fig. 4 is provided and designed as a sealant bead 25, in a schematic plan view. The sealant bead 25 extends without interruption over an entire length of the folded seam connection 20. The folded seam sealant 24 is designed, for example, as a hot melt adhesive and / or silicone. A cross-sectional area A1 of the sealant bead 25 in the part 23 of the fastening flange 22 formed by the folded seam connection 20 is larger than a cross-sectional area A2 in a central region 26 of the folded seam connection 20. The central region 26 is an area which, along the depth direction y (arrow), in particular exactly, is provided between the closed door 3 or the loading opening 6 and the rear wall 9. The larger cross-sectional area A1 of the sealant bead 25 has, for example, at least two, three or four times the area than the cross-sectional area A2 in the central region 26 of the folded seam connection 20.

For example, a rear wall sealing means 27 is provided circumferentially along the fastening flange 22 between the rear wall 9 and the fastening flange 22. Like in the Fig. 9 As can be seen, the folded joint 20 has a folded notch 32, which makes sealing more difficult, in particular in the region of the part 23 of the fastening flange 22. Therefore, in the part 23 of the fastening flange 22 formed by the folded joint 20, the rebate sealant 24 and the rear wall sealant 27 are brought into contact with one another in order to jointly seal the washing chamber 4 from an environment 28 in the area of the part 23 of the fastening flange 22. In addition, a larger amount of the rebate sealant 24 is provided on the part 23 of the rebate connection 20 and an improved seal is effected on the part 23 of the rebate connection 20.

Furthermore, the folded seam connection 20 has an area of overlap 29 with the frame 16, in particular the leg 17. In the overlap area 29, the folded seam connection 20 can be closed more poorly than in the central area 26, since when the seamed connection 20 is closed in the overlap area 29 from the inside of the washing chamber 4, there is only a reduced counterforce due to the there existing frame 16 is applied. The folded seam connection 20 therefore has a greater width (viewed in the width direction x (arrow)) in the overlapping area 29 of the seamed connection 20 than in the central area 26 of the folded seam connection 20 , an increased amount of the rebate sealant 24 is accordingly provided in regions, so that a cross-sectional area A3 of the sealant bead 25 in the overlap region 29 is greater than the cross-sectional area A2. The provision of the different amounts of the rebate sealant 24 is realized even before the formation of the rebate connection 20 when the rebate sealant 24 is applied to the floor panel 7 and / or the side walls 10, 11 by means of, for example, a metering system that carries out different metering.

The Fig. 6 FIG. 11 shows a schematic block diagram of a method for producing the washing container 2 for the domestic dishwasher, in particular with a sealant bead 25, as in FIG Fig. 5 shown.

In this case, in a first step S1, the base plate 7, the rear wall 9 and the U-shaped washing container jacket 12 are provided. In a step S2, the rebate sealant 24 is provided on the base plate 7 and / or the washing container jacket 12 for sealing the rebate connection 20, 21 and forming the sealant bead 25. The sealant bead 25 preferably has different thicknesses along its extension. In a step S3, the U-shaped washing container jacket 12 is arranged on the floor panel 7. In a step S4, the folded joint 20, 21 is formed and the U-shaped washing container jacket 12 is connected to the floor panel 7 with the aid of the folded joint 20, 21. In a step S5, the fastening flange 22 is molded onto the base plate 7 and the U-shaped washing container jacket 12 for fastening the rear wall 9 to the base sheet 7 and to the U-shaped washing container jacket 12, the sealant bead 25 being provided in step S2, that the cross-sectional area A1 of the sealant bead 25 in the part 23 of the fastening flange 22 formed by the folded seam connection 20, 21 is greater than the cross-sectional area A2 in a central area 26 of the seamed connection 20, 21. Furthermore, the sealant bead 25 is provided in this way in step S2 that the cross-sectional area A3 of the sealant bead 25 in the overlapping area 29 is greater than the cross-sectional area A2 in a central area 26 of the folded seam connection 20, 21.

The Fig. 7 shows a schematic section VII - VII from FIG Fig. 1 . As from the Fig. 7 As can be seen, the household dishwasher comprises the rear wall sealing means 27, which is provided between the rear wall 9 and the fastening flange 22 and is accordingly clamped and compressed between the rear wall 9 and the fastening flange 22. The rear wall 9 and the fastening flange 22 are preferably connected to one another, in particular by means of weld points, in particular weld points 30.

The Fig. 8 shows a schematic section VIII - VIII from FIG Fig. 7 . It can be seen that the fold sealant 24 is provided in the fold connection 20 and that the rear wall sealant 27 is provided between the rear wall 9 and the fastening flange 22. Furthermore, an additional sealant 31 is provided between the rebate sealant 24 and the rear wall sealant 27. The additional sealant 31 is in this case, in particular by means of a compressive force F (arrow) on the rear wall 9, in a rebate notch 32 (see FIG Fig. 9 ) been pushed.

The rebate notch 32 is designed in particular as a gap between the side wall 10, 11 and the floor panel 7. The additional sealant 31 comes into contact with the rear wall sealant 27 and the rebate sealant 24 and reliably seals the rebate notch 32. The additional sealant 31 can be designed as a hot melt adhesive and / or a pressure-sensitive adhesive. The additional sealing means 31 is preferably only provided on or on the part 23 of the folded seam connection 20, since the seaming notch 32 makes sealing between the rear wall 9 and the fastening flange 22 more difficult at this point.

The Fig. 9 shows in contrast to the Fig. 8 schematically, the additional sealing means 31 before the rear wall 9 is pressed against the fastening flange 22 and welded to it. The additional sealant 31 is partially applied to the fastening flange 22 in such a way that it at least partially covers the rebate notch 32. Subsequently, when the rear wall 9 is pressed against the fastening flange 22, the additional sealing means 31 is inserted into the rebate notch 32 - to form a sealing arrangement as in FIG Fig. 8 shown - pushed. For example, the additional sealant 31 has a liquid or viscous state when it is pressed on.

The additional sealant 31 is preferably designed as a pressure-sensitive hotmelt. This has the advantage that the viscous and sticky consistency prevents the additional sealant 31 from escaping to the outside. Furthermore, when the pressure is applied, the additional sealant 31 is liquefied. Therefore, the additional sealant 31 can reliably wet the fold notch 32 and the rear wall sealant 27. Alternatively, the additional sealant 31 can have the same chemical composition as the rebate sealant 24 and / or the rear wall sealant 27.

The Fig. 10 FIG. 11 shows a schematic block diagram of a method for producing the washing container 2 for the domestic dishwasher, in particular as in FIG Figures 7 to 9 shown. In a step S10, the base plate 7, the rear wall 9 and the U-shaped washing container jacket 12 are provided. In a step S20, the washing container jacket 12 is arranged on the floor panel 7. In a step S30, the folded joint 20 is formed and the U-shaped washing container jacket 12 is connected to the floor panel 7 with the aid of the folded joint 20.

In a step S40, the fastening flange 22 is integrally formed on the floor panel 7 and the U-shaped washing container jacket 12 for fastening the rear wall 9 to the floor panel 7 and to the U-shaped washing container jacket 12. In a step S50, the rear wall 9 is arranged on the fastening flange 22. In a step S60, the fold sealant 24 is provided in the fold connection 20. In a step S70, the rear wall sealing means 27 is provided between the rear wall 9 and the fastening flange 22. In a step S80, the additional sealant 31 is provided between the rebate sealant 24 and the rear wall sealant 27.

The Fig. 11 shows a horizontal section through the folded seam connection 20 and the rear wall 9 during a further production step. Four sheet metal layers 37 are arranged next to one another on the folded seam connection 20, which makes it difficult to bend the folded seam connection 20 for the formation of the fastening flange 22. In the in the Fig. 11 After arranging the rear wall 9 together with the rear wall sealing means 27 on the fastening flange 22, a pressure force F (arrow) is applied to an outside 35 of a corner section 34 of the folded joint 20 with the aid of a punch 33. The outside 35 is a side which faces away from the washing chamber 4 and from is accessible outside of the washing area 4. The compressive force F (arrow) is used to reduce a corner radius R (arrow), which can also be referred to as the inner radius, for example, of the folded joint 20 in the corner section 34 and, in particular, to press the rear wall sealant 27 into the folded joint 20, in particular into the folded groove 32, applied. The punch 33 has a deformation surface 36 which is formed in a wedge shape and comes into contact with the outer side 35 when the compressive force F (arrow) is applied.

As an alternative or in addition, after step S50, for example, the compressive force F (arrow) is applied to the bent corner section 34 of the folded joint 20 with the aid of the punch 33 to reduce the corner radius R (arrow) of the folded joint 20 in the corner section 34 and to press in the additional sealant 31 in the folded seam connection 20, in particular the folded notch 32, is applied.

Such an application of the compressive force F (arrow) is referred to as calibration, for example. The calibration has the advantage that the bending radius R (arrow) in the folded joint 20 can be bent to below 1.4 mm despite the fourfold sheet thickness from 2 mm. Since the rear wall sealing means 27 can be designed for a bending radius R (arrow) of 1.4 mm, reliable sealing at the rebate notch 32 is guaranteed.

The Fig. 12 shows an inner side 38 of the rear wall 9, which faces the washing chamber 4. On the inside 38 of the rear wall 9 is a receiving bead 39 (see also Fig. 11 ) provided for the rear wall sealant 27. The receiving bead 39 is designed as a recess and is designed to receive the rear wall sealing means 27. Furthermore, the receiving bead 39 defines the geometry of the rear wall sealant 27 and prevents the rear wall sealant 27 from slipping. The rear wall sealant 27 is provided on the rear wall 9 as a sealant bead 42. The receiving bead 39 is formed circumferentially and has two widenings 40, in each of which a cross-sectional enlargement 41 of the sealant bead 42 is provided. A cross-sectional area A4 at the respective cross-sectional enlargement 41 is larger than a cross-sectional area A5 in an area outside the cross-sectional enlargement 41. For example, the cross-sectional enlargements 41 are designed as the thickest points of the sealant bead 42.

The widenings 41 of the receiving bead 39 are provided so that they overlap with the folded seam connection 20 and are correspondingly provided on the folded notch 32. In other words, the widenings 40, viewed in the height direction z (arrow), are arranged at the same height as the folding notch 32. This ensures that the notch 32 in the fastening flange 22 is reliably sealed.

The Fig. 5 , the FIGS. 7 to 10 , the Fig. 11 and the Fig. 12 show different and alternative measures to improve the tightness at the folding notch 32 in the fastening flange 22. It is possible that all measures are implemented in one embodiment. It is also possible for only two or three of the measures to be provided in any combination in one embodiment.

Although the present invention has been described on the basis of exemplary embodiments, it can be modified in many ways.

Reference symbols used

1

Household dishwasher

2

Rinsing container

3

door

4th

Wash cabinet

5

Swivel axis

6th

Loading opening

7th

Floor pan

8th

blanket

9

Back wall

10

Side wall

11

Side wall

12th

U-shaped washing container jacket

13th

Washware holder

14th

Washware holder

15th

Washware holder

16

frame

17th

leg

18th

leg

19th

Intermediate thighs

20th

Seam connection

21

Seam connection

22nd

Mounting flange

23

Part of the seam connection

24

Rebate sealant

25th

Sealant bead

26th

Middle area

27

Back wall sealant

28

Surroundings

29

Overlap area

30th

Welding point

31

Additional sealant

32

Rebate notch

33

stamp

34

Corner section

35

Outside

36

Deformation surface

37

Sheet metal layer

38

inside

39

Receiving bead

40

Expansion

41

Cross-sectional enlargement

42

Sealant bead

43

Interface

A.

Pull-out direction (arrow)

A1

Cross sectional area

A2

Cross sectional area

A3

Cross sectional area

A4

Cross sectional area

A5

Cross sectional area

E.

Direction of insertion (arrow)

F.

Compressive force (arrow)

R.

Radius (arrow)

S1

step

S2

step

S3

step

S4

step

S5

step

S10

step

S20

step

S30

step

S40

step

S50

step

S60

step

S70

step

S80

step

VII - VII

cut

VIII - VIII

cut

x

Width direction (arrow)

y

Depth direction (arrow)

z

Height direction (arrow)

Claims (15)

1. Rinsing container (2) for a household dishwashing machine (1), comprising a bottom plate (7), a rear wall (9), a U-shaped rinsing container jacket (12) arranged on the bottom plate (7) and fixedly connected thereto with the aid of a folded joint (20, 21), a fastening flange (22) integrally formed on the bottom plate (7) and on the U-shaped rinsing container jacket (12) for fastening the rear wall (9) to the bottom plate (7) and to the U-shaped rinsing container jacket (12), and a rear wall sealing means (27), which is provided between the rear wall (9) and the fastening flange (22), characterised in that

   - a folding sealing means (24) is provided in the folded joint (20, 21) and

   - an additional sealing means (31) is provided between the folding sealing means (24) and the rear wall sealing means (27).
2. Rinsing container (2) according to claim 1, characterised in that the fastening flange (22) comprises a part (23) of the folded joint (20, 21), wherein the additional sealing means (31) is provided only on or against this part (23) of the folded joint (20, 21).
3. Rinsing container (2) according to claim 1 or 2, characterised in that the additional sealing means (31) is configured as a hot melt adhesive and/or a pressure-sensitive adhesive.
4. Rinsing container (2) according to claim 1, 2 or 3, characterised in that the rear wall (9) is provided with a receiving bead (39) for the rear wall sealing means (27), that the rear wall sealing means (27) is provided between the rear wall (9) and the fastening flange (22) as a sealing bead (42) and that the receiving bead (39) has a widening (40), in which a cross-sectional enlargement (41) of the sealing bead (42) is provided.
5. Rinsing container (2) according to claim 4, characterised in that the widening (40) of the receiving bead (39) is arranged so as to overlap with the folded joint (20, 21).
6. Rinsing container (2) according to one of the preceding claims, characterised in that the fastening flange (22) comprises a part (23) of the folded joint (20, 21) and that the folding sealing means (24) is provided in the folded joint (20, 21) and is embodied as a sealing bead (25), wherein a cross-sectional surface (A1) of the sealing bead (25) in the part (23) of the fastening flange (22) formed by the folded joint (20, 21) is greater than a cross-sectional surface (A2) in a central region (26) of the folded joint (20, 21), which is provided along the depth direction (y) of the rinsing container (2) between a loading opening (6) of the rinsing container (2) and the rear wall (9) of the rinsing container (2).
7. Rinsing container (2) according to claim 6, characterised in that the greater cross-sectional surface (A1) of the sealing bead (25) has at least double, triple or quadruple or quintuple the surface than the cross-sectional surface (A2) in the central region (26) of the folded joint (20, 21), which is provided along the depth direction (y) of the rinsing container (2) between a loading opening (6) of the rinsing container (2) and the rear wall (9) of the rinsing container (2).
8. Rinsing container (2) according to claim 6 or 7, characterised in that the folding sealing means (24) is configured as hot melt adhesive and/or silicone.
9. Rinsing container (2) according to claim 6, 7 or 8, characterised in that the rear wall sealing means (27) is provided in a peripheral manner along the fastening flange (22) between the rear wall (9) and the fastening flange (22), wherein the folding sealing means (24) and the rear wall sealing means (27) are in contact with one another in the part (23) of the fastening flange (22) formed by the folded joint (20, 21).
10. Rinsing container (2) according to one of the claims 6 to 9, characterised in that a frame (16) is provided, which is provided on a loading opening (6) of the rinsing container (2) and which is arranged at least in sections inside the U-shaped rinsing container jacket (12) and at least in sections outside the U-shaped rinsing container jacket (12), that the folded joint (20, 21) comprises an overlapping region (29) with the frame (16) and that a cross-sectional surface (A3) of the sealing bead (25) in the overlapping region (29) is greater than the cross-sectional surface (A2) in the region (26) of the folded joint (20, 21), which is provided along the depth direction (y) of the rinsing container (2) between a loading opening (6) of the rinsing container (2) and the rear wall (9) of the rinsing container (2).
11. Rinsing container (2) according to claim 10, characterised in that the folded joint (20, 21) in the overlapping region (29) of the folded joint (20, 21) has a greater width than in the region (26) of the folded joint (20, 21) which is provided along the depth direction (y) of the rinsing container (2) between a loading opening (6) of the rinsing container (2) and the rear wall (9) of the rinsing container (2).
12. Household dishwashing machine (1) with a rinsing container (2) according to one of the preceding claims.
13. Method for producing a rinsing container (2) for a household dishwashing machine (1), having the steps:

    - providing (S10; S1) a bottom plate (7), a rear wall (9) and a U-shaped rinsing container jacket (12),

    - arranging (S20; S3) the U-shaped rinsing container jacket (12) on the bottom plate (7),

    - forming (S30; S4) the folded joint (20, 21) and connecting the U-shaped rinsing container jacket (12) to the bottom plate (7) by means of the folded joint (20, 21),

    - integrally forming (S40; S5) a fastening flange (22) on the bottom plate (7) and the rinsing container jacket (12) for fastening the rear wall (9) to the bottom plate (7) and to the U-shaped rinsing container jacket (12),

    - arranging (S50) the rear wall (9) on the fastening flange (22),

    - providing (S60) a folding sealing means (24) in the folded joint (20, 21),

    - providing (S70) a rear wall sealing means (27) between the rear wall (9) and the fastening flange (22), and

    - providing (S80) an additional sealing means (31) between the folding sealing means (24) and the rear wall sealing means (27).
14. Method according to claim 13, characterised in that after arranging (S50) the rear wall (9) on the fastening flange (22) a compressive force (F) is applied by means of a punch (33) onto a bent-back corner portion (34) of the folded joint (20, 21) in order to reduce a corner radius (R) of the folded joint (20, 21) in the corner portion (34) and to push the additional sealing means (31) into the folded joint (20, 21).
15. Method according to claim 13 or 14, having the steps:

    - prior to arranging (S3) the U-shaped rinsing container jacket (12) on the bottom plate (7), providing (S2) a folding sealing means (24) on the bottom plate (7) and/or the U-shaped rinsing container jacket (12) for sealing a folded joint (20, 21) and for forming a sealing bead (25), and

    - prior to arranging (S50) the rear wall (9) on the fastening flange (22), integrally forming (S5) a fastening flange (22) on the bottom plate (7) and the U-shaped rinsing container jacket (12) for fastening the rear wall (9) to the bottom plate (7) and to the U-shaped rinsing container jacket (12), wherein a cross-sectional surface (A1) of the part (23) of the fastening flange (22) formed by the folded joint (20, 21) is greater than a cross-sectional surface (A2) in a central region (26) of the folded joint (20, 21), which is provided along the depth direction (y) of the rinsing container (2) between a loading opening (6) of the rinsing container (2) and the rear wall (9) of the rinsing container (2).

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